Since the 18th century, in the Phu Bien Tap Luc by Le Quy Don, the word "porcelain" was mentioned, when they were quite popular materials used in the decoration of the lords' palaces and houses of the people at that time: "In the back garden, there were fake gem mountains, square ponds, rainbow bridges, and water pavilions. The inner and outer walls were all built several meters thick, using lime and pieces of porcelain to create the shapes of dragons, phoenixes, unicorns, tigers, grasses and flowers...". In the folk and royal art life in Hue, the term porcelain inlay has been used for a long time and has become a common way of referring to the decorative art genre of cutting, pressing, gluing and assembling pieces of porcelain onto the surface of architecture, round, masonry statues or objects, thereby creating artistic images.